I notice a process is taking alot of CPU resources. By doing the "prstat" command at OS level, I've got its process id but would like to find out who it belongs to, from which it connects from and what action is it doing. I looked up v$process and found the process_id in "spid" column but v$process does not provide enough info. When I looked up v$session, I don't see which column is linked to v$process's column so I can join them together to find out more info.

How do people usually find the information with only OS process id is known?